APA-referens (7:e uppl.)

Guttman, S. A. (1995). [D - F]. North Waterloo Academic Press.

Chicago-referens (17:e uppl.)

Guttman, Samuel A. [D - F]. Waterloo, Ontario: North Waterloo Academic Press, 1995.

MLA-referens (8:e uppl.)

Guttman, Samuel A. [D - F]. North Waterloo Academic Press, 1995.